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Todd
40
"Object reference not set to an instance of an object" in chart constructor
posted

The line

 UltraChart c = new UltraChart();

is throwing the following exception when the aspx page i'm load testing comes under heavy load.

System.NullReferenceException: Object reference not set to an instance of an object.

at Infragistics.WebUI.UltraWebChart.UltraChart.Infragistics.UltraChart.Resources.IChartComponent.Invalidate(CacheLevel cacheLevel)

at Infragistics.UltraChart.Resources.Appearance.AppearanceHelper.UpdateParentProperty()

at Infragistics.UltraChart.Resources.Appearance.PaintElement.set_StrokeWidth(Int32 value)

at Infragistics.UltraChart.Resources.Appearance.HistogramLineAppearance..ctor(IChartComponent component)

at Infragistics.UltraChart.Resources.Appearance.HistogramChartAppearance..ctor(IChartComponent component)

at Infragistics.WebUI.UltraWebChart.UltraChart.CreateAppearanceObjects()

at Infragistics.WebUI.UltraWebChart.UltraChart.CreateChart()

at Infragistics.WebUI.UltraWebChart.UltraChart..ctor()

at mPrism.Sharepoint.WebParts.ExceptionPieChart.ExceptionPieChart.OnPreRender(EventArgs e)

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

 

Please help!

Thanks

 Todd Wilder

  • 17605
    posted

    I’ve been trying this in standard ASP.NET page and there is no problem. As I’m seeing you are using the chart in SharePoint and the first error is:

    mPrism.Sharepoint.WebParts.ExceptionPieChart.ExceptionPieChart.OnPreRender(EventArgs e) 

     

    Do you have other charts in the WebPart? Could you provide us more information?